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Simplifying -4 = 8 + 3u Solving -4 = 8 + 3u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-3u' to each side of the equation. -4 + -3u = 8 + 3u + -3u Combine like terms: 3u + -3u = 0 -4 + -3u = 8 + 0 -4 + -3u = 8 Add '4' to each side of the equation. -4 + 4 + -3u = 8 + 4 Combine like terms: -4 + 4 = 0 0 + -3u = 8 + 4 -3u = 8 + 4 Combine like terms: 8 + 4 = 12 -3u = 12 Divide each side by '-3'. u = -4 Simplifying u = -4
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